In this automotive repair guide, we learn how to troubleshoot and repair a "no heat" problem on a Nissan Altima car. For all of the gritty details, including step-by-step instructions, and to get started resolving your own Altima's no-heat trouble, watch this video tutorial.

So have Nissan Altima 03 just got water pump out on plus both thermostat in heat is fine when I'm driving but when stop at light it's starts to get cooler not freezing but not super hot please help this car driving me crazy